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30080269 = 149201881
BaseRepresentation
bin111001010111…
…1110100001101
32002121020101001
41302233310031
530200032034
62552420301
7513451402
oct162576415
962536331
1030080269
1115a8582a
12a0a7691
13630269b
143dd02a9
152992a14
hex1cafd0d

30080269 has 4 divisors (see below), whose sum is σ = 30282300. Its totient is φ = 29878240.

The previous prime is 30080233. The next prime is 30080291. The reversal of 30080269 is 96208003.

30080269 = T292 + T293 + ... + T589.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14160169 + 15920100 = 3763^2 + 3990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30080269 is a prime.

It is a super-2 number, since 2×300802692 = 1809645166224722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30080299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100792 + ... + 101089.

It is an arithmetic number, because the mean of its divisors is an integer number (7570575).

Almost surely, 230080269 is an apocalyptic number.

It is an amenable number.

30080269 is a deficient number, since it is larger than the sum of its proper divisors (202031).

30080269 is a wasteful number, since it uses less digits than its factorization.

30080269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202030.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30080269 is about 5484.5482038177. The cubic root of 30080269 is about 311.0001309608. Note that the first 3 decimals are identical.

The spelling of 30080269 in words is "thirty million, eighty thousand, two hundred sixty-nine".

Divisors: 1 149 201881 30080269